You’d like an 8 page summary of Cognitive Load Theory, written in plain English for teachers? You’d like three pages of pertinent sources?
Click here for a handy report from the Centre for Education Statistics and Evaluation. (That’s not a typo; the Centre is in New South Wales, Australia.)
For example: you might check out the “expertise reversal effect” described on page 7; you’ll gain a whole new perspective on worked examples.